In this equation, 2mg + 02 → 2mgo, what's the coefficient of the oxygen molecule? a 4 b 2 c 0 d 1 will give the

Match each object to its description: a. coma of a comet b. comet tail c. oort cloud haze surrounding a nucleus created by solar wind. hypothetical sphere around the solar system

Can someone me with questions 12 and 13 plz.

The formation of a solid, also known as a is an indication of a chemical change. precipitate particulate particle powder